WQ0009589_Final Permit_19940729

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
July 29, 1994
Mark P. Ashness, Public Works Director
County of Chatham
Post Office Box 87
Pittsboro, North Carolina 27312
Dear Mr. Ashness:
C)EHNFlt
Subject: Pennit No. WQ0009589
County of Chatham
Jordan Lake Water Treatment Plant
Wastewater Spray Irrigation
Chatham County
In accordance with your application received June 13, 1994, we are forwarding herewith Permit
No. WQ0009589, dated July 29, 1994, to the County of Chatham for the construction and operation of
the subject wastewater treatment and spray irrigation facilities.
This permit shall be effective from the date of issuance until June 30, 1999, and shall be subject to
the conditions and limitations as specified therein. Please pay particular attention to the monitoring
requirements in this permit. Failure to establish an adequate system for collecting and maintaining the
required operational information will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of
this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the
North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer
27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this matter, please contact Mr. Michael D. Allen at [phone].
Sincerely, , n
�1J • r t
A. PrestoHoward, Jr., P.E.
cc: Chatham County Health Department
John A. Edwards and Company
Raleigh Regional Office, Water Quality
Facilities Assessment Unit
Training and Certification Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
SPRAY IRRIGATION SYSTEM PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as
amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
County of Chatham
Chatham County
093-13"1,
construction and operation of a 300 GPD spray irrigation wastewater treatment and disposal system
consisting of a 1,000 gallon baffled septic tank, a 141 ft2 pressure dosed surface sand filter, a 1,000
gallon sand filter pump tank, a tablet chlorinator, a 2,000 gallon storage/pump tank with a 40 GPM pump
and audible and visual alarms, and a 10,395 ft2 spray irrigation area to serve twelve (12) employees at the
County of Chatham's Jordan Lake Water Treatment Plant, with no discharge of wastes to the surface
waters, pursuant to the application received June 13, 1994, and in conformity with the project plan,
specifications, and other supporting data subsequently filed and approved by the Department of
Environment, Health and Natural Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until June 30, 1999, and shall be subject to
the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a professional engineer certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting materials. Mail the Certification to the Water Quality
Permits and Engineering Unit, P.O. Box 29535, Raleigh, NC 27626-0535.
2. The Raleigh Regional Office, telephone number [phone], shall be notified at least
forty-eight (48) hours in advance of operation of the installed facilities so that an in-place
inspection can be made. Such notification to the regional supervisor shall be made during
the normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday,
excluding State Holidays.
3. The spray irrigation facilities shall be effectively maintained and operated at all times so that
there is no discharge to the surface waters, nor any contamination of ground waters which
will render them unsatisfactory for normal use. In the event that the facilities fail to
perform satisfactorily, including the creation of nuisance conditions or failure of the
irrigation area to adequately assimilate the wastewater, the Permittee shall take immediate
corrective actions including those actions that may be required by the Division of
Environmental Management, such as the construction of additional or replacement
wastewater treatment and disposal facilities.

4. The issuance of this permit shall not relieve the Permittee of the responsibility for damages
to surface or groundwaters resulting from the operation of this facility.
5. The sand media of the pressure dosed surface sand filter must comply with the Division's
sand specifications. The engineer's certification will serve as evidence that these
specifications have been met.
6. A leakage test shall be performed on the septic tank and dosing tank to insure that any
exfiltration occurs at a rate which does not exceed twenty (20) gallons per twenty-four (24)
hours per 1,000 gallons of tank capacity. The engineer's certification will serve as proof of
compliance with this condition.
7. If excavation into bedrock is required for the installation of the septic tank or sand filter, the
pit shall be lined with a 10 mil synthetic liner.
8. The residuals generated from these treatment facilities must be disposed in accordance with
General Statute 143-215.1 and in a manner approved by the North Carolina Division of
Environmental Management.
9. Diversion or bypassing of the untreated wastewater from the treatment facilities is
prohibited.
10. The following buffers shall be maintained:
a) 400 feet between wetted area and any residence or places of public assembly under
separate ownership,
b) 150 feet between wetted area and property lines,
c) 100 feet between wetted area and wells,
d) 100 feet between wetted area and drainageways or surface water bodies,
e) 50 feet between wetted area and public right of ways,
f) 100 feet between treatment/storage units and any wells, and
g) 50 feet between treatment units and property lines.
II. OPERATION _AND MAINTENANCE REQ11IREMENTS
The facilities shall be properly maintained and operated at all times.
2. A suitable vegetative cover shall be maintained.
Irrigation shall not be performed during inclement weather or when the ground is in a
condition that will cause runoff.
4. Adequate measures shall be taken to prevent wastewater runoff from the spray field.
The application rate shall not exceed 15.9 inches per year at an instantaneous application
rate not to exceed 0.20 inches per hour.
6. The facilities shall be effectively maintained and operated as a non -discharge system to
prevent the discharge of any wastewater resulting from the operation of this facility.
7. No type of wastewater other than that from the Jordan Lake Water Treatment Plant shall be
sprayed onto the irrigation area.
8. In the event that the sprinkler heads fail to achieve the design diameter of 32.0 feet due to
obstructions, the obstructions shall be removed or the sprinkler heads shall be raised and
supported to such height that the design diameter is achieved.
2

9. No traffic or equipment shall be allowed on the disposal area except while installation
occurs or while normal maintenance is being performed.
10. The Permittee is responsible for the operation and maintenance of the entire treatment and
disposal system including, but not limited to, the following items:
a. The septic tank shall be checked annually and pumped out as needed.
b. The tablet chlorinator shall be checked every week. Tablets shall be added so as to
provide proper chlorination,
c. The storage, pump, and alarm systems shall be inspected weekly. The scum layer shall
be removed at the same interval as the septic tank is cleaned out.
d . The spray system shall be inspected weekly to make certain of the sprayers proper
operation, that the vegetative growth allows a proper spray pattern, that the soil is
assimilating the disposed treated wastewater with no surface runoff, and that no
objectionable odors are being generated.
III. M NITORING AND REPORTING REQUIREMENTS
1. Any monitoring deemed necessary by the Division of Environmental Management to insure
surface and ground water protection will be established and an acceptable sampling
reporting schedule shall be followed.
2. The Permittee shall maintain records of all maintenance performed on the system and
irrigation area, as required in Condition I1.10 for a minimum of five years. This
information shall be provided to the Division of Environmental Management upon request.
3. Noncompliance Notification:
The Permittee shall report by telephone to the Raleigh Regional ,Office, telephone number
[phone], as soon as possible, but in no case more than 24 hours or on the next
working day following the occurrence or first knowledge of the occurrence of any of the
following:
a. Any process unit failure, due to known or unknown reasons, that renders the facility
incapable of adequate wastewater treatment, such as mechanical or electrical failures of
pumps, spray heads, etc.; or
b, Any failure of a pumping station or treatment facility resulting in a by-pass directly to
receiving waters without treatment of all or any portion of the influent to such station or
facility.
Persons reporting such occurrences by telephone shall also file a written report in letter
form within 15 days following first knowledge of the occurrence. This report must outline
the actions taken or proposed to be taken to ensure that the problem does not recur.
IV. INSPECTIONS
1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to
insure proper operation of the subject facilities.
3

2. Any duly authorized officer, employee, or representative of the Division of Environmental
Management may, upon presentation of credentials, enter and inspect any property,
premises or place on or related to the disposal site or facility at any reasonable time for the
purpose of determining compliance with this permit, may inspect or copy any records that
must be maintained under the terms and conditions of this permit, and may obtain samples
of groundwater, surface water, or leachate.
V. GENERAL CONDITIONS
I . This permit shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other supporting
data.
2. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.
3. This permit is not transferable. In the event there is a desire for the facilities to change
ownership, or there is a name change of the Permittee, a formal permit request must be
submitted to the Division of Environmental Management accompanied by an application
fee, documentation from the parties involved, and other supporting materials as may be
appropriate. The approval of this request will be considered on its merits and may or may
not be approved.
4. Upon the availability of a municipal or regional sewerage collection system, the subject
wastewater treatment facilities shall be abandoned and all wastewater discharged into the
municipal or regional sewerage system.
5. The spray irrigation field shall be fenced with at least a two strand wire fence.
6. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division of Environmental Management in
accordance with North Carolina General Statute 143-215.6(a) to 143-215.6(c).
7. The issuance of this permit does not preclude the Permittee from complying with any and
all statutes, rules, regulations, or ordinances which may be imposed by other government
agencies (local, state, and federal) which have jurisdiction.
8. This permit may be revoked if the Permittee fails to abide by the conditions of the
"Operation and Maintenance Agreement" previously signed by the Permittee.
9. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of the project.
10. The Permittee, at least six (6) months prior to the expiration of this permit, shall request its
extension. Upon receipt of the request, the Commission will review the adequacy of the
facilities described therein, and if warranted, will extend the Permit for such period of time
and under such conditions and limitations as it may deem appropriate.
Permit issued this the twenty-ninth day of July, 1994
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
I�
h
A. Preston oward, Jr., P.$., Director
Division o nvironmental Management
By Authority of the Environmental Management Commission
Permit Number WQ0009589
4

Permit No. WQ0009589
July 29, 1994
ENGINEER - R
I, , as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the
project, , for the
Project Name Location
Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation
of the construction such that the construction was observed to be built within substantial compliance and
intent of this permit, the approved plans and specifications, and other supporting materials.
Signature
Date
E
Registration No.

COMMISSIONERS
aY DUNLAP, JR., Chairmen
MARY HAYES HOLMES
UVA HOLLAND
GUS MURCHISON
E. T. HANNER
COUNTY OF CHATHAM
P. O. BOX 87
PITTSBORO, N. C. 27312
ORGANIZED 1770 707 SQUARE MILES
May 23, 1994
W
BEN SHIVAR
County Manager
ROBERT L. GUNN
County Attomey
Phone [phone]
N. C. Division of Environmental Management
P.O. Box 29535
Raleigh, NC 27626-0535 -
Wastewater Treatment System
Final Disposal by Spray Irrigation, Jordan Lake Water Treatment Plant
Chatham County ;
I agree to operate and maintain the wastewater treatment systems as follows:
1. The Permittee is responsible for the operation and maintenance of the entire treatment and
disposal system including, but not limited to, the following items:
a. The septic tank shall be checked every six (6) months and pumped out as required.
b. The tablet chlorinator shall be checked every week until the actual usage rate is established
and thence on a monthly basis. Tablets shall be added so as to provide proper chlorination.
c. The storage system, pump system, and alarm system shall be inspected monthly. The scum
laver shall be removed at the same interval as the septic tank is cleaned out.
d. The spray system shall be inspected monthly to make certain of the spraver's proper
operation, that the vegetative growth allows proper spray patterns, that the soil is absorbing
the disposed treated wastewater with no surface runoff, and that no objectionable odors are
being generated.
2.Failure of the Permittee to properly operate this system is subject to a penalty up to $10,000.00
per day.
3. Failure to meet permit conditions or violation of the State's surface or groundwater regulations
will require cessation of occupancy of the residence.
I understand that failure to comply with these conditions along with the permit conditions may
voiding the permit. f^ .04
.J
Ben S a County Manager,. a
f
Signature of Applicant

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,,ATING SCALE -FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility:
Ov )r Contact Person:
- MIA C44
6� s5
pump tanks
M� Address: `j2
, "8ok 27
p�T3 Q aR� N
C Z�J31Z
County: ch-PrTtj
NIS
Telephone: 9 I`fi — 542—
4Z --Present
Present Classification:-
Al^ „
New Facility ---Z
Existing Facility
-NPDESer. No.NCOO
Nondisc. Per. NoOao03589Health
Dept.PerNo,
Rated by:- A�
/
Telephone: 5-71-4"7ot> Date: ?jz Gi4-
Reviewed by:
Health Dept.
Telephone:
ReolonalOffice
Telephone:
Central Office
Telephone:
ORC:
Gf ade:
Telephone:
Check Classification (s):
Subsurface
V Spray Irrigation
Land Application
Wastewater Classification.
(Circle One) ©
II 111 IV
Total Points: 15
-------------------------------------------------------------
_ii ' wX: Ni : i i O►iti;tom EQjI1PMEWTMr.8ABFANlJNTEGRAj BART QE INDUSTRIAL PROM
••�IQEREQ WASTE TRF-ATMB\rr FOR THE it ' `M • •AI -SO 7 •• •L f i
AND GB&M NITRIFICATION ♦ ED u' -.♦
SUBSURFACE CLASSIFICATION
(check all units that apply)
1.
septic tanks
2.
pump tanks
3,
siphon or pump -dosing systems
4.
sand filters
5._
_grease trap inierceplor
6.,
oillwater separators
7.,
_,gravity subsurface treatment and disposal:
8. Pressure subsurace treatrr.e ,t and disposal
SPRAY IRRiaATiON Cl fSSiFICATHJN
(check all units that apply)
1. preliminary treatment (definition no. 32 )
2. lagoons
3. septic tanks
4. pump tanks
5. pumps
6, sand fitters
7. grease trap/intercepior
S. o+!rwater separators
9_- t/ disinfection
10.�chemicaI addition for nutrienlfafgae control
11, spray irrigation of wastewater
In addition to the above classifications, pretreatment of wastewater in excess of these components ,shal;-
be rated using the point rating system and will require an operator with an appropriate duel certification
MND APPLICATION/RESIDUALS CLASSIFICATION! (Applies only to permit holder) _
1. Land application of biosolids, residuals or contaminated soils on a designated site.
I'VASTEYYAER TREATMENT FAClLrTYC1ASS!FiCATION
The following systems shall be assigned a Class I classification, Ujjjess the flow is of a significant quantity or the technology is unusually
Complex, to require consideration by the Commission on a case-by-case basis: (Check if Appropriate)
I.-Oil/water Separator Systems consisting only of physical separation, pumps and disposal;
2. Septic TanWSand Filler Systems consisting only of septic tanks, dosing apparatus, pumps,sand fillers, disinfection
and direct discharge;
3. Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical treatment for
algae or nutrient control, and direct discharge;
4. Closed-loop Recyde Systems;
5. Groundwaler Remediation Systems consisting only of oil/water separators, pumps, air -stripping, carbon adsorption, disinfection
and dispos.,1;
6. Aquacullure operations with discharge to surface wafers;
7. Waler Plant sludge handling and back -wash water treatment;
8- _Seafood processing consisting of screening and disposal.
9._ Single-family discharging systems, with the exception of Aerobic 'treatment Unils, will he classified if permitted alter July 1,
1493 or if upon inspection by the Division, it is found that the system is not being adequately operated or maintained, such
systems will be netilied of the classification or reclassification by the Commission, in wriiing.

The following scale is used for rating wastewater treatment facili(ies: (circle appropriate points)
ITEM POINTS
(1) Industrial Pretreatmers Units or Industrial Prelrealmeni Program (see dellnhlon No, 33) ..... »... ................... ..................... 4.
(2) DESIGN FLOW OF PLANT IN gpd fnol applicable to nar~oontaminwad cooing waters, sludge handling facilities for
waMer purification plants, lofally closed cycle systems(sea darinhion No, 11), and facilhiss consisting only or Ilem
(4)(d) or items. (4)(d) and {111(d))
0 - a20,DD0......................................» .. ..,................................. .............. .................. ...._..............
.. .
20,001 - 50.Doo......».................... ...—�..».....................................»......_.........................»...................2 T
50,001 - 10D.ODD .............................. _....... - »..... _..... 3
.........:.................._....... 3 _
100,001 - 25D,000.-_...__ --•---•.... . ... .................. ............................................................................... A
250.001 - 500,000 ..................................... ...... ._-.............................. ... ...... ..............................
500,1501 - 1,000,000 ................................ .... ... ............... ................. ..... .............. ...................
1.t700.001 - 2,000,000 ............... -}.,
2,000.001 (and up) rate 1 pont additional for each 200,000 ppd capacity up to a maximum of .._._. _ 34 r_
Design Flow {gpd)_aQQ
(3) PRELIMINARY UNrTSIPROCESSES (see de finilion No.32)
(a) BarScreens.................................. _...-.--.»._._.....-.....--,,..............
..»....»_ __..................__... ,...»..1•
or»
(b) Mechanical Screens, Sialic Screens Mat Comminuting Dav€res».».,._.»........ »� _. _,_,_„_” •y ` ; .
(c) GraRemoval-.,_-..»...__..__:»._.........................».....-._.__.................................1� ter.
(d) i,MechanlcaiorAerated Ott Removal ........... .........»......__.,.............-...._...........__._,.:................... .»»_ ...2•
r'•T
(a) now Measuring Gevice_._.....................
or i
(I} Instrumented now Measurement ...... ... —............. ___.......... ........................... ........................ ._ ... ..2 .:
(9} Preasratlon...................................... ...•................. __-,........ .............. ...... »__.... ............... _...... 2 � -
(h) Influent Flow Equalization ...................... .._.-...._............ »... .................................. ... ...... ......... »:..2',
tGrease or Oil Separators - Gravh _.......»............. »» ... »__.... ......2 ' ' ..
Mechanical. ........................ ._...,-...... ....... -.,,.......................... ... .... ..... ....................
DiswivedAir Flotation .......................-_._-•.___-_......._.. ......»_.............._..
....._._....�. .......
(1) Prechlorination....................................... ............. ......................................... .....5
(4) PFUMAFEYTREATMB,4T Nrrs?RxESSFs .5:=
(a) Septic Tank (see delinilion No. 43) ..»— _.-.......-....... 2 i
(b) Imhoff Tank.._...-----._...................-•---..,._..-..............»..................................
(c) Primary Clarillers............................................ ...•...-_....................................._.................................»....::5
(d) Settling Pondsor Settling Tanks for Inorganic Norrloxic Materials (sludge handling facilities for water S '
r.
pur'slication plants, sand, gravel. None, and other mining operations except recreational activities such at gam
orgold mining) ........................................ .... .......... -................................................. ............................ 2 .
(5) 5ECQNL14RYTREATZv4 W LINTSI?R7CE.SSES
(a) Carbonaceous Stage 1=-
(i) Aeralion-High Purity Oxygen System. ......... ........ ..,:...»20
r ��-
D€ fused Air System ........... .................................................... »...............»»........._..-.10
Mechanical All System (lixed, floating or rotor) ............... .._.__..__._ _»_.. ..._..» »...8
Separate Sludge Reaer"Drt...................... ............................. ......................
.......
(ii) Tridding Fitter
HighRate .................................... »................................... ........ »............................ .....
Standard Rate ........... ................. »................................ ..... ................ »-»............ ....
5'.
Packed Tower....--..., ...... ._...... .................................................................... ......
54
.....�.5 f. -
(iii) Biological Aerated Frier or Aerated Bioln.ical F1lar_....... »... ».... .. ........
......�.........._..... ,10 :r
(iv) Aerated Lagoons ......... ._»................................................. .......I ......
.....»............ ...10'
(v) Rolating Biological Contac;ors ...... -..................................... ».............. ..................... ».10 ;
(VI) Sand Filters -intermittent biological ............. .......................... _.._Z
Recirculating biologlCal..................................................»..»........•............_.................... -3 ;y
(vil) Stabilization Lagoons .................... ................ ---- -. -----....,......._.........._...S
(vui) Ctarifer......................................... ,...,.................................................... »....._.............S ;
rx Single stage system for combined carbonaceous removal of BOD and nitro nous removal b ;
nhrificalion (see definition No. 12){Paints for this hem have to be in addition to hems
(5)(a)(i) through (5)(a)(viii),
vlllizing the extended aeration prots= (see-deflnhOn No.3a)
»............................... .... s.
vliffzing other than the extended aeration process ............ _..._............................•• ✓�f
(x} Nutrierri additions to enhance BOD remwal...».......................»................................ ,...x
(XI) Biologlcal Culture ('Super Bugs')addition..... ......... ............... ................................ .... 5 :,•ki
(b) Nitrogenous Stage
s
(I) Aeration -High Purhy Oxygen System ................................ ................... ............... 20 10
Ditfu&ad Air Syslem.................. ....•...._...
Mechanical Air System (fixed, floating or rotor)....................................................._.....•••
3
Separate Sludge Reiteration .......»................... ......................»............. ................ .... .....
fi
(11) Trickling F€Iter-High Rate ............. ... .................. ........... ......................... ......»7.*-• • �
Standard Rale ............... .. ......................»...5
Packed Tower .............. ......._.........
{li€) Biological Aerated Fitter or Aerated Biological Sher- .......... .....-. _.
(iv) Rotating Biological Comaciors ...... ......................
{v} Sand Mher - Intermittent biological..................................................................»..........
Recirculating blologfoal............................ ................ .......... -.,................ 6 ......... ................
aCer................................».........................................................(v) Cl ...............'...
(6) TEMIAFTYORADVANCED TREATMENT LNTM'PROCESSES
�r•�:
(a) Acti:•aled Carbon Beds
wishout carbon regeneration ...................................... ••.S
with carbon reganeration............. »..... ............... .......................... ....................... ........... .
......1 $
(b) Powderod or GranularActivaled Carbon Feed -
3
:4ilhout carbon regeneration ......................... »...........................
with carbon regeneration .............................. ........•'-...15
(e) Air stripping ...........................................
„�..
: •,
(d) Donitrirication Process...........................................1 0 ......,............................_............ ,:..:
(e) Eloclrodialysis..................................._.............5 s.
(I) Foam Soparalion ............................. ......
(9y Ion Excltango................. .......... ........................... ............ ............................... ............................... ............5
(h) Land Application of Treatod Effluent (see dolinhion No. 22b) (not applicable Ior rand. gravol, clam
<
and othof similar mining opormiont) by high rate€,nriltralion......... ....................... .......................... ... ..........• ter,
.......5
(i)7v.i[rosCroens......................................................_................................_........................... .....20 �.
(1) PI'osphorous nomoval by Biological Procossos (Soo dollnitlon No. 2G)............
....
(k) Polishing Ponds -without aoration............................. .......... ..................... ....
.....-.........